Effects of MBT spark timing on performance emission and combustion characteristics of S.I engine using hydrogen-CNG blends

Effects of MBT spark timing on performance emission and combustion characteristics of S.I engine using hydrogen-CNG blends

This paper shows the effects of 0%, 5%, 10% and 15% blends of hydrogen by energy with Compressed Natural Gas (CNG) on multi-cylinder bi-fuel spark ignition engine using sequential port fuel injection system. At WOT (Wide Open Throttle) position MBT (Maximum Brake Torque) spark timing shown improveme...

Full description

Saved in:
Bibliographic Details
Published in:International journal of hydrogen energy Vol. 41; no. 1; pp. 666 - 674
Main Authors: Nitnaware, P.T., Suryawanshi, J.G.
Format: Journal Article
Language:English
Published: Elsevier Ltd 05-01-2016
Subjects:
Blends
CNG
Combustion
CPmax
Emissions control
Engines
HCNG
Hydrogen
Hydrogen-based energy
MBT
MFB
NOx
Polymer blends
Time measurements
CPmax
ST
MFB
BMEP
H2
CO
COVPmax
IMEP
BSEC
BTE
HCNG
NOx
COVIMEP
HC
CNG
WOT
MBT
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper shows the effects of 0%, 5%, 10% and 15% blends of hydrogen by energy with Compressed Natural Gas (CNG) on multi-cylinder bi-fuel spark ignition engine using sequential port fuel injection system. At WOT (Wide Open Throttle) position MBT (Maximum Brake Torque) spark timing shown improvement in performance parameters with reduction in NOx emission. MBT spark timing increased with increase in speed and decreased with increase in hydrogen addition for all fuel blends. Hydrocarbon (HC) and carbon monoxide (CO) emissions rose up with decrease in equivalence ratio and reduced with increase in HCNG blends. Hydrogen addition had shown rise in peak pressure, increase in heat release rate and decrease in combustion duration. The optimum MBT spark timing observed for 5% hydrogen blend at 2500 rpm is 25°CABTDC for compromise with oxides of nitrogen (NOx) and performance output. •This paper shows the effects of 0%, 5%, 10% and 15% blends of hydrogen by energy with CNG on bi-fuel NA SI engine using SPFIS.•MBT spark timing shown improvement in performance parameters with reduction in NOx emission.•Carbon based emission reduced and NOx emission increased with increase in hydrogen addition.•The optimum MBT spark timing of 25°CABTDC and injection pressure 2.6 bar is observed for 5% hydrogen addition at 2500 rpm.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2015.11.074